Wondering about the coverage and cost of your project? Use our Border Trim and Wallpaper Calculator to get the approximate amount (area) of wallpaper, number of rolls, and optional trim, required for your project. Need more help deciding on a color pattern or deciding how much to order? We're here to help! Reach out to our knowledgeable and friendly associates any time for assistance and we would be happy to help you with even the most difficult issues.